A rectangle has a length that is 6 cm less than triple the width. The area of the rectangle is 72 cm squared

In a given amount of time, Mary drove twice as far as Lynn. Altogether they drove 60 miles. How far did Mary

klemol [59]

Answer:

40 its c

Step-by-step explanation:

8 0

3 years ago

The boxes are shaped as right rectangular prisms. The larger box has a length of 24cm a width of 10 cm, and height of 30cm. The

irina1246 [14]

Answer:

900cm^2

Step-by-step explanation:

24, 10, 30 in half= 12, 5, 15 so, 12*5*15=900cm^2

5 0

4 years ago

Which function is the inverse of f(x) = 2x + 3?

Gnesinka [82]

Answer:

f(x inv)=-1/2x-3

Step-by-step explanation:

You pretty much just have to flip all the numbers to fractions and all the positives to negatives.

6 0

3 years ago

All the fourth-graders in a certain elementary school took a standardized test. A total of 85% of the students were found to be

Aneli [31]

Answer:

There is a 2% probability that the student is proficient in neither reading nor mathematics.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a student is proficient in reading

B is the probability that a student is proficient in mathematics.

C is the probability that a student is proficient in neither reading nor mathematics.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a student is proficient in reading but not mathematics and $A \cap B$ is the probability that a student is proficient in both reading and mathematics.

By the same logic, we have that:

$B = b + (A \cap B)$

Either a student in proficient in at least one of reading or mathematics, or a student is proficient in neither of those. The sum of the probabilities of these events is decimal 1. So

$(A \cup B) + C = 1$